./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b28318b64c584c946b04c5086a6c24adb23afe0fc28f8c52df4df9b28156611e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:31:23,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:31:23,245 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:31:23,249 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:31:23,250 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:31:23,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:31:23,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:31:23,282 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:31:23,283 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:31:23,284 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:31:23,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:31:23,285 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:31:23,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:31:23,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:31:23,287 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:31:23,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:31:23,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:31:23,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:31:23,289 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:31:23,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:31:23,290 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:31:23,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:31:23,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:31:23,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:31:23,292 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:31:23,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:31:23,293 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:31:23,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:31:23,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:31:23,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:31:23,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:31:23,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:31:23,296 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:31:23,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:31:23,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:31:23,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:31:23,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:31:23,297 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:31:23,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:31:23,297 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:31:23,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:31:23,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:31:23,298 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b28318b64c584c946b04c5086a6c24adb23afe0fc28f8c52df4df9b28156611e [2023-11-29 05:31:23,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:31:23,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:31:23,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:31:23,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:31:23,545 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:31:23,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i [2023-11-29 05:31:26,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:31:26,525 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:31:26,525 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i [2023-11-29 05:31:26,538 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/data/c87b0e309/0a3bea308e114c6382f48028f2f363aa/FLAGdf2fd2dbe [2023-11-29 05:31:26,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/data/c87b0e309/0a3bea308e114c6382f48028f2f363aa [2023-11-29 05:31:26,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:31:26,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:31:26,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:31:26,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:31:26,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:31:26,565 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:31:26" (1/1) ... [2023-11-29 05:31:26,566 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549f7057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:26, skipping insertion in model container [2023-11-29 05:31:26,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:31:26" (1/1) ... [2023-11-29 05:31:26,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:31:26,780 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i[916,929] [2023-11-29 05:31:26,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:31:26,925 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:31:26,937 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-46.i[916,929] [2023-11-29 05:31:27,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:31:27,021 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:31:27,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27 WrapperNode [2023-11-29 05:31:27,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:31:27,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:31:27,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:31:27,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:31:27,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,114 INFO L138 Inliner]: procedures = 26, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 416 [2023-11-29 05:31:27,114 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:31:27,115 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:31:27,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:31:27,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:31:27,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,176 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 05:31:27,176 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,176 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:31:27,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:31:27,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:31:27,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:31:27,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (1/1) ... [2023-11-29 05:31:27,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:31:27,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:27,252 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:31:27,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:31:27,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:31:27,291 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:31:27,291 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:31:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:31:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:31:27,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:31:27,406 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:31:27,409 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:31:28,078 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:31:28,117 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:31:28,117 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:31:28,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:31:28 BoogieIcfgContainer [2023-11-29 05:31:28,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:31:28,119 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:31:28,119 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:31:28,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:31:28,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:31:26" (1/3) ... [2023-11-29 05:31:28,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b317f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:31:28, skipping insertion in model container [2023-11-29 05:31:28,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:31:27" (2/3) ... [2023-11-29 05:31:28,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b317f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:31:28, skipping insertion in model container [2023-11-29 05:31:28,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:31:28" (3/3) ... [2023-11-29 05:31:28,126 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-46.i [2023-11-29 05:31:28,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:31:28,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:31:28,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:31:28,193 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3414dfc4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:31:28,193 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:31:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 107 states have internal predecessors, (155), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-29 05:31:28,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:31:28,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:28,221 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:28,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:28,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1559807470, now seen corresponding path program 1 times [2023-11-29 05:31:28,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:28,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849981573] [2023-11-29 05:31:28,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:28,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:28,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:28,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849981573] [2023-11-29 05:31:28,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 05:31:28,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34696788] [2023-11-29 05:31:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:28,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:28,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:28,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:28,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:31:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:28,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 05:31:28,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 6050 trivial. 0 not checked. [2023-11-29 05:31:28,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:31:28,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34696788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:28,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:31:28,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287104436] [2023-11-29 05:31:28,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:28,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 05:31:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:28,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 05:31:28,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:31:28,981 INFO L87 Difference]: Start difference. First operand has 165 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 107 states have internal predecessors, (155), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-29 05:31:29,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:29,049 INFO L93 Difference]: Finished difference Result 327 states and 588 transitions. [2023-11-29 05:31:29,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 05:31:29,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) Word has length 361 [2023-11-29 05:31:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:29,063 INFO L225 Difference]: With dead ends: 327 [2023-11-29 05:31:29,063 INFO L226 Difference]: Without dead ends: 163 [2023-11-29 05:31:29,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 05:31:29,072 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:29,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:31:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-29 05:31:29,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-29 05:31:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 105 states have internal predecessors, (150), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-29 05:31:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 262 transitions. [2023-11-29 05:31:29,140 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 262 transitions. Word has length 361 [2023-11-29 05:31:29,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:29,141 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 262 transitions. [2023-11-29 05:31:29,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 2 states have call successors, (56) [2023-11-29 05:31:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 262 transitions. [2023-11-29 05:31:29,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:31:29,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:29,152 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:29,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:31:29,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:31:29,361 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:29,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:29,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1716973670, now seen corresponding path program 1 times [2023-11-29 05:31:29,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:29,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633152187] [2023-11-29 05:31:29,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:29,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:29,463 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:31:29,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059661728] [2023-11-29 05:31:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:29,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:29,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:29,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:29,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:31:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:29,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:31:29,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:29,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-11-29 05:31:29,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:31:29,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633152187] [2023-11-29 05:31:29,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:31:29,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059661728] [2023-11-29 05:31:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059661728] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:29,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:31:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126416232] [2023-11-29 05:31:29,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:29,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:31:29,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:31:29,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:29,858 INFO L87 Difference]: Start difference. First operand 163 states and 262 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-11-29 05:31:29,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:29,916 INFO L93 Difference]: Finished difference Result 326 states and 525 transitions. [2023-11-29 05:31:29,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:31:29,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 361 [2023-11-29 05:31:29,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:29,922 INFO L225 Difference]: With dead ends: 326 [2023-11-29 05:31:29,922 INFO L226 Difference]: Without dead ends: 164 [2023-11-29 05:31:29,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:31:29,925 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 0 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:29,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 509 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:31:29,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-29 05:31:29,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-29 05:31:29,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 106 states have (on average 1.4245283018867925) internal successors, (151), 106 states have internal predecessors, (151), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-29 05:31:29,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 263 transitions. [2023-11-29 05:31:29,951 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 263 transitions. Word has length 361 [2023-11-29 05:31:29,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:29,954 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 263 transitions. [2023-11-29 05:31:29,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-11-29 05:31:29,955 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 263 transitions. [2023-11-29 05:31:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:31:29,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:29,962 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:29,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:31:30,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:30,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:30,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash 206254364, now seen corresponding path program 1 times [2023-11-29 05:31:30,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:30,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060250395] [2023-11-29 05:31:30,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:30,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:30,241 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:31:30,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066339815] [2023-11-29 05:31:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:30,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:30,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:30,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:30,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:31:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:30,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 05:31:30,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked. [2023-11-29 05:31:30,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:31:30,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:30,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060250395] [2023-11-29 05:31:30,630 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:31:30,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066339815] [2023-11-29 05:31:30,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066339815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:31:30,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:31:30,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:31:30,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638106378] [2023-11-29 05:31:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:31:30,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:31:30,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:30,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:31:30,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:31:30,634 INFO L87 Difference]: Start difference. First operand 164 states and 263 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-11-29 05:31:30,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:30,765 INFO L93 Difference]: Finished difference Result 488 states and 784 transitions. [2023-11-29 05:31:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:31:30,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 361 [2023-11-29 05:31:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:30,771 INFO L225 Difference]: With dead ends: 488 [2023-11-29 05:31:30,771 INFO L226 Difference]: Without dead ends: 325 [2023-11-29 05:31:30,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:31:30,774 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 246 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:30,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1185 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:31:30,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-29 05:31:30,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 182. [2023-11-29 05:31:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 124 states have (on average 1.4516129032258065) internal successors, (180), 124 states have internal predecessors, (180), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-29 05:31:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 292 transitions. [2023-11-29 05:31:30,807 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 292 transitions. Word has length 361 [2023-11-29 05:31:30,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:30,808 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 292 transitions. [2023-11-29 05:31:30,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) [2023-11-29 05:31:30,809 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 292 transitions. [2023-11-29 05:31:30,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:31:30,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:30,816 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:30,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:31:31,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:31,017 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:31,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:31,037 INFO L85 PathProgramCache]: Analyzing trace with hash -691138914, now seen corresponding path program 1 times [2023-11-29 05:31:31,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:31,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620774418] [2023-11-29 05:31:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:31,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:31:31,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486642290] [2023-11-29 05:31:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:31,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:31,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:31,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:31,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:31:31,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:31,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:31:31,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3025 proven. 66 refuted. 0 times theorem prover too weak. 3069 trivial. 0 not checked. [2023-11-29 05:31:31,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:31:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 99 proven. 66 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-11-29 05:31:32,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:32,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620774418] [2023-11-29 05:31:32,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:31:32,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486642290] [2023-11-29 05:31:32,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486642290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:31:32,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:31:32,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:31:32,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560620174] [2023-11-29 05:31:32,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:31:32,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:31:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:31:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:31:32,047 INFO L87 Difference]: Start difference. First operand 182 states and 292 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-11-29 05:31:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:32,525 INFO L93 Difference]: Finished difference Result 371 states and 590 transitions. [2023-11-29 05:31:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:31:32,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) Word has length 361 [2023-11-29 05:31:32,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:32,532 INFO L225 Difference]: With dead ends: 371 [2023-11-29 05:31:32,533 INFO L226 Difference]: Without dead ends: 190 [2023-11-29 05:31:32,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 714 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:31:32,535 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 238 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:32,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 475 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:31:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-29 05:31:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2023-11-29 05:31:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 127 states have (on average 1.4330708661417322) internal successors, (182), 127 states have internal predecessors, (182), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-29 05:31:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 294 transitions. [2023-11-29 05:31:32,567 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 294 transitions. Word has length 361 [2023-11-29 05:31:32,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:32,568 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 294 transitions. [2023-11-29 05:31:32,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 2 states have call successors, (78), 2 states have call predecessors, (78), 4 states have return successors, (79), 2 states have call predecessors, (79), 2 states have call successors, (79) [2023-11-29 05:31:32,569 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 294 transitions. [2023-11-29 05:31:32,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:31:32,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:32,574 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:32,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:31:32,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:32,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:32,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:32,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1712207268, now seen corresponding path program 1 times [2023-11-29 05:31:32,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:32,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952513638] [2023-11-29 05:31:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:32,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:32,841 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:31:32,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042855024] [2023-11-29 05:31:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:32,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:32,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:32,843 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:32,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:31:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:33,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:31:33,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2583 proven. 117 refuted. 0 times theorem prover too weak. 3460 trivial. 0 not checked. [2023-11-29 05:31:33,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:31:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 48 proven. 117 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-11-29 05:31:33,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:33,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952513638] [2023-11-29 05:31:33,936 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:31:33,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042855024] [2023-11-29 05:31:33,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042855024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:31:33,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:31:33,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 05:31:33,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131284077] [2023-11-29 05:31:33,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:31:33,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:31:33,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:33,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:31:33,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:31:33,941 INFO L87 Difference]: Start difference. First operand 186 states and 294 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 3 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) [2023-11-29 05:31:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:34,620 INFO L93 Difference]: Finished difference Result 498 states and 772 transitions. [2023-11-29 05:31:34,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:31:34,621 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 3 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) Word has length 361 [2023-11-29 05:31:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:34,625 INFO L225 Difference]: With dead ends: 498 [2023-11-29 05:31:34,625 INFO L226 Difference]: Without dead ends: 313 [2023-11-29 05:31:34,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:31:34,627 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 443 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:34,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 713 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:31:34,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-29 05:31:34,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 302. [2023-11-29 05:31:34,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 219 states have (on average 1.4246575342465753) internal successors, (312), 220 states have internal predecessors, (312), 77 states have call successors, (77), 5 states have call predecessors, (77), 5 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-29 05:31:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 466 transitions. [2023-11-29 05:31:34,660 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 466 transitions. Word has length 361 [2023-11-29 05:31:34,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:34,661 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 466 transitions. [2023-11-29 05:31:34,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 10 states have internal predecessors, (126), 3 states have call successors, (95), 2 states have call predecessors, (95), 4 states have return successors, (96), 3 states have call predecessors, (96), 3 states have call successors, (96) [2023-11-29 05:31:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 466 transitions. [2023-11-29 05:31:34,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:31:34,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:34,665 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:34,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 05:31:34,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:34,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:34,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1317840482, now seen corresponding path program 1 times [2023-11-29 05:31:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:34,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966597089] [2023-11-29 05:31:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:34,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:34,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:31:34,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704618495] [2023-11-29 05:31:34,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:34,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:34,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:34,921 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:34,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:31:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:35,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:31:35,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2829 proven. 108 refuted. 0 times theorem prover too weak. 3223 trivial. 0 not checked. [2023-11-29 05:31:35,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:31:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 57 proven. 108 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-11-29 05:31:35,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:35,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966597089] [2023-11-29 05:31:35,758 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:31:35,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704618495] [2023-11-29 05:31:35,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704618495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:31:35,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:31:35,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 05:31:35,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696334591] [2023-11-29 05:31:35,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:31:35,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:31:35,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:31:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:31:35,762 INFO L87 Difference]: Start difference. First operand 302 states and 466 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2023-11-29 05:31:36,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:36,083 INFO L93 Difference]: Finished difference Result 615 states and 941 transitions. [2023-11-29 05:31:36,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:31:36,084 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) Word has length 361 [2023-11-29 05:31:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:36,087 INFO L225 Difference]: With dead ends: 615 [2023-11-29 05:31:36,088 INFO L226 Difference]: Without dead ends: 314 [2023-11-29 05:31:36,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:31:36,090 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 141 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:36,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 473 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:31:36,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-11-29 05:31:36,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 310. [2023-11-29 05:31:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 225 states have (on average 1.4044444444444444) internal successors, (316), 226 states have internal predecessors, (316), 77 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (77), 76 states have call predecessors, (77), 77 states have call successors, (77) [2023-11-29 05:31:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 470 transitions. [2023-11-29 05:31:36,116 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 470 transitions. Word has length 361 [2023-11-29 05:31:36,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:36,117 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 470 transitions. [2023-11-29 05:31:36,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 3 states have call successors, (92), 2 states have call predecessors, (92), 4 states have return successors, (93), 3 states have call predecessors, (93), 3 states have call successors, (93) [2023-11-29 05:31:36,118 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 470 transitions. [2023-11-29 05:31:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:31:36,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:36,120 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:36,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 05:31:36,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:36,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:36,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1605319516, now seen corresponding path program 1 times [2023-11-29 05:31:36,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:36,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812641273] [2023-11-29 05:31:36,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:36,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:36,372 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:31:36,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231583199] [2023-11-29 05:31:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:36,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:36,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:36,375 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:36,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:31:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:36,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:31:36,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3482 proven. 228 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2023-11-29 05:31:37,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:31:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 96 proven. 231 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2023-11-29 05:31:37,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:37,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812641273] [2023-11-29 05:31:37,967 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:31:37,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231583199] [2023-11-29 05:31:37,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231583199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:31:37,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:31:37,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 05:31:37,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285960765] [2023-11-29 05:31:37,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:31:37,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:31:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:31:37,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:31:37,972 INFO L87 Difference]: Start difference. First operand 310 states and 470 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 5 states have call successors, (101), 3 states have call predecessors, (101), 7 states have return successors, (102), 5 states have call predecessors, (102), 5 states have call successors, (102) [2023-11-29 05:31:38,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:38,551 INFO L93 Difference]: Finished difference Result 523 states and 787 transitions. [2023-11-29 05:31:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:31:38,552 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 5 states have call successors, (101), 3 states have call predecessors, (101), 7 states have return successors, (102), 5 states have call predecessors, (102), 5 states have call successors, (102) Word has length 361 [2023-11-29 05:31:38,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:38,554 INFO L225 Difference]: With dead ends: 523 [2023-11-29 05:31:38,554 INFO L226 Difference]: Without dead ends: 208 [2023-11-29 05:31:38,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:31:38,556 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 561 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:38,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 667 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:31:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-29 05:31:38,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2023-11-29 05:31:38,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 139 states have (on average 1.3453237410071943) internal successors, (187), 139 states have internal predecessors, (187), 56 states have call successors, (56), 6 states have call predecessors, (56), 6 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-29 05:31:38,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 299 transitions. [2023-11-29 05:31:38,576 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 299 transitions. Word has length 361 [2023-11-29 05:31:38,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:38,577 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 299 transitions. [2023-11-29 05:31:38,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 5 states have call successors, (101), 3 states have call predecessors, (101), 7 states have return successors, (102), 5 states have call predecessors, (102), 5 states have call successors, (102) [2023-11-29 05:31:38,578 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 299 transitions. [2023-11-29 05:31:38,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:31:38,581 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:38,581 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:38,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:31:38,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:38,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:38,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash -634414436, now seen corresponding path program 1 times [2023-11-29 05:31:38,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:38,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637463465] [2023-11-29 05:31:38,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:38,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:38,831 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:31:38,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411242324] [2023-11-29 05:31:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:38,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:38,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:38,833 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:38,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:31:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:39,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:31:39,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2863 proven. 57 refuted. 0 times theorem prover too weak. 3240 trivial. 0 not checked. [2023-11-29 05:31:41,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:31:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 108 proven. 57 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2023-11-29 05:31:41,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:41,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637463465] [2023-11-29 05:31:41,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:31:41,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411242324] [2023-11-29 05:31:41,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411242324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:31:41,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:31:41,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 05:31:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435997253] [2023-11-29 05:31:41,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:31:41,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:31:41,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:41,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:31:41,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:31:41,990 INFO L87 Difference]: Start difference. First operand 202 states and 299 transitions. Second operand has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-11-29 05:31:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:31:43,581 INFO L93 Difference]: Finished difference Result 758 states and 1127 transitions. [2023-11-29 05:31:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:31:43,582 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) Word has length 361 [2023-11-29 05:31:43,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:31:43,587 INFO L225 Difference]: With dead ends: 758 [2023-11-29 05:31:43,587 INFO L226 Difference]: Without dead ends: 557 [2023-11-29 05:31:43,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:31:43,589 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 696 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:31:43,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1589 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 05:31:43,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2023-11-29 05:31:43,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 324. [2023-11-29 05:31:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 198 states have (on average 1.2575757575757576) internal successors, (249), 198 states have internal predecessors, (249), 112 states have call successors, (112), 13 states have call predecessors, (112), 13 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-29 05:31:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 473 transitions. [2023-11-29 05:31:43,637 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 473 transitions. Word has length 361 [2023-11-29 05:31:43,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:31:43,638 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 473 transitions. [2023-11-29 05:31:43,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 4 states have call successors, (112), 3 states have call predecessors, (112), 5 states have return successors, (112), 4 states have call predecessors, (112), 4 states have call successors, (112) [2023-11-29 05:31:43,638 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 473 transitions. [2023-11-29 05:31:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:31:43,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:31:43,640 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:31:43,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:31:43,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:43,841 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:31:43,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:31:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1527900774, now seen corresponding path program 1 times [2023-11-29 05:31:43,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:31:43,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012042630] [2023-11-29 05:31:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:43,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:31:43,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:31:43,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455600290] [2023-11-29 05:31:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:31:43,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:31:43,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:31:43,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:31:43,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:31:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:31:49,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 05:31:49,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:31:51,755 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 4697 proven. 336 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2023-11-29 05:31:51,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:31:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 297 proven. 189 refuted. 0 times theorem prover too weak. 5674 trivial. 0 not checked. [2023-11-29 05:31:58,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:31:58,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012042630] [2023-11-29 05:31:58,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:31:58,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455600290] [2023-11-29 05:31:58,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455600290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:31:58,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:31:58,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 33 [2023-11-29 05:31:58,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318608280] [2023-11-29 05:31:58,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:31:58,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 05:31:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:31:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 05:31:58,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:31:58,954 INFO L87 Difference]: Start difference. First operand 324 states and 473 transitions. Second operand has 33 states, 32 states have (on average 5.65625) internal successors, (181), 30 states have internal predecessors, (181), 12 states have call successors, (101), 7 states have call predecessors, (101), 13 states have return successors, (102), 12 states have call predecessors, (102), 12 states have call successors, (102) [2023-11-29 05:32:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:04,999 INFO L93 Difference]: Finished difference Result 953 states and 1341 transitions. [2023-11-29 05:32:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-29 05:32:05,000 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.65625) internal successors, (181), 30 states have internal predecessors, (181), 12 states have call successors, (101), 7 states have call predecessors, (101), 13 states have return successors, (102), 12 states have call predecessors, (102), 12 states have call successors, (102) Word has length 361 [2023-11-29 05:32:05,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:05,006 INFO L225 Difference]: With dead ends: 953 [2023-11-29 05:32:05,006 INFO L226 Difference]: Without dead ends: 752 [2023-11-29 05:32:05,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 695 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2419 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2014, Invalid=6176, Unknown=0, NotChecked=0, Total=8190 [2023-11-29 05:32:05,011 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 975 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 3201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:05,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 2084 Invalid, 3201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 05:32:05,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-11-29 05:32:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 721. [2023-11-29 05:32:05,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 471 states have (on average 1.2611464968152866) internal successors, (594), 472 states have internal predecessors, (594), 208 states have call successors, (208), 41 states have call predecessors, (208), 41 states have return successors, (208), 207 states have call predecessors, (208), 208 states have call successors, (208) [2023-11-29 05:32:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1010 transitions. [2023-11-29 05:32:05,208 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1010 transitions. Word has length 361 [2023-11-29 05:32:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:05,209 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 1010 transitions. [2023-11-29 05:32:05,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.65625) internal successors, (181), 30 states have internal predecessors, (181), 12 states have call successors, (101), 7 states have call predecessors, (101), 13 states have return successors, (102), 12 states have call predecessors, (102), 12 states have call successors, (102) [2023-11-29 05:32:05,210 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1010 transitions. [2023-11-29 05:32:05,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-29 05:32:05,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:05,213 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:05,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:32:05,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:05,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:05,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1505268520, now seen corresponding path program 1 times [2023-11-29 05:32:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:05,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929911871] [2023-11-29 05:32:05,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:05,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:05,460 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:32:05,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129319927] [2023-11-29 05:32:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:05,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:05,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:05,462 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:32:05,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:32:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:05,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:32:05,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:32:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 3154 proven. 93 refuted. 0 times theorem prover too weak. 2913 trivial. 0 not checked. [2023-11-29 05:32:06,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:32:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 231 proven. 96 refuted. 0 times theorem prover too weak. 5833 trivial. 0 not checked. [2023-11-29 05:32:06,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:06,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929911871] [2023-11-29 05:32:06,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:32:06,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129319927] [2023-11-29 05:32:06,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129319927] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:32:06,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:32:06,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-11-29 05:32:06,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552311622] [2023-11-29 05:32:06,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:32:06,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:32:06,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:32:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:32:06,495 INFO L87 Difference]: Start difference. First operand 721 states and 1010 transitions. Second operand has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 3 states have call successors, (75), 3 states have call predecessors, (75), 7 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2023-11-29 05:32:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:07,824 INFO L93 Difference]: Finished difference Result 1008 states and 1401 transitions. [2023-11-29 05:32:07,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 05:32:07,825 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 3 states have call successors, (75), 3 states have call predecessors, (75), 7 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) Word has length 361 [2023-11-29 05:32:07,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:07,828 INFO L225 Difference]: With dead ends: 1008 [2023-11-29 05:32:07,828 INFO L226 Difference]: Without dead ends: 434 [2023-11-29 05:32:07,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 704 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=992, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 05:32:07,830 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 521 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:07,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1363 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:32:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-29 05:32:07,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 388. [2023-11-29 05:32:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 246 states have (on average 1.1910569105691058) internal successors, (293), 246 states have internal predecessors, (293), 112 states have call successors, (112), 29 states have call predecessors, (112), 29 states have return successors, (112), 112 states have call predecessors, (112), 112 states have call successors, (112) [2023-11-29 05:32:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 517 transitions. [2023-11-29 05:32:07,899 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 517 transitions. Word has length 361 [2023-11-29 05:32:07,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:07,900 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 517 transitions. [2023-11-29 05:32:07,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 3 states have call successors, (75), 3 states have call predecessors, (75), 7 states have return successors, (76), 3 states have call predecessors, (76), 3 states have call successors, (76) [2023-11-29 05:32:07,900 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 517 transitions. [2023-11-29 05:32:07,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-11-29 05:32:07,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:07,902 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:32:07,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:32:08,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:08,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:08,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash -454357581, now seen corresponding path program 1 times [2023-11-29 05:32:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:08,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991256290] [2023-11-29 05:32:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:08,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:08,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:32:08,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235938693] [2023-11-29 05:32:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:08,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:08,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:08,157 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:32:08,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:41:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:22,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-29 05:41:22,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:25,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 4162 proven. 461 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2023-11-29 05:41:25,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:46,902 WARN L293 SmtUtils]: Spent 12.93s on a formula simplification. DAG size of input: 96 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 05:42:05,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:05,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991256290] [2023-11-29 05:42:05,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:42:05,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235938693] [2023-11-29 05:42:05,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235938693] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:05,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:42:05,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2023-11-29 05:42:05,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215664813] [2023-11-29 05:42:05,957 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:42:05,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 05:42:05,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:05,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 05:42:05,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1506, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 05:42:05,960 INFO L87 Difference]: Start difference. First operand 388 states and 517 transitions. Second operand has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 33 states have internal predecessors, (127), 11 states have call successors, (56), 11 states have call predecessors, (56), 15 states have return successors, (56), 11 states have call predecessors, (56), 11 states have call successors, (56) [2023-11-29 05:42:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:21,135 INFO L93 Difference]: Finished difference Result 1520 states and 1921 transitions. [2023-11-29 05:42:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2023-11-29 05:42:21,135 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 33 states have internal predecessors, (127), 11 states have call successors, (56), 11 states have call predecessors, (56), 15 states have return successors, (56), 11 states have call predecessors, (56), 11 states have call successors, (56) Word has length 362 [2023-11-29 05:42:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:21,141 INFO L225 Difference]: With dead ends: 1520 [2023-11-29 05:42:21,141 INFO L226 Difference]: Without dead ends: 1283 [2023-11-29 05:42:21,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11432 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=5118, Invalid=27102, Unknown=0, NotChecked=0, Total=32220 [2023-11-29 05:42:21,152 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1927 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 1129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 4035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1129 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:21,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1930 Valid, 1809 Invalid, 4035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1129 Valid, 2906 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-11-29 05:42:21,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2023-11-29 05:42:21,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1180. [2023-11-29 05:42:21,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 803 states have (on average 1.1818181818181819) internal successors, (949), 805 states have internal predecessors, (949), 262 states have call successors, (262), 114 states have call predecessors, (262), 114 states have return successors, (262), 260 states have call predecessors, (262), 262 states have call successors, (262) [2023-11-29 05:42:21,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1473 transitions. [2023-11-29 05:42:21,442 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1473 transitions. Word has length 362 [2023-11-29 05:42:21,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:21,443 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1473 transitions. [2023-11-29 05:42:21,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.4324324324324325) internal successors, (127), 33 states have internal predecessors, (127), 11 states have call successors, (56), 11 states have call predecessors, (56), 15 states have return successors, (56), 11 states have call predecessors, (56), 11 states have call successors, (56) [2023-11-29 05:42:21,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1473 transitions. [2023-11-29 05:42:21,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-11-29 05:42:21,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:21,447 INFO L195 NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:42:21,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:42:21,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:42:21,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:21,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:21,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2035171381, now seen corresponding path program 1 times [2023-11-29 05:42:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:21,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602321524] [2023-11-29 05:42:21,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:21,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:21,695 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:42:21,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073335983] [2023-11-29 05:42:21,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:21,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:21,696 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:21,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10f52d7-a7d9-4b9f-bfd2-3eccf47ca1d2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:42:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:28,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 05:42:28,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2712 proven. 249 refuted. 0 times theorem prover too weak. 3199 trivial. 0 not checked. [2023-11-29 05:42:30,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:38,928 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~var_1_15~0 65536))) (and (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_131 Int)) (or (< 255 v_z_131) (forall ((v_z_135 Int)) (or (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 100) c_~var_1_19~0) .cse0 1)) (< 155 (+ v_z_135 v_z_131)) (< v_z_135 0) (< 0 (+ (div (+ (- 412) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)))) (< v_z_131 0))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_131 Int)) (or (< 255 v_z_131) (forall ((v_z_135 Int)) (or (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 100) c_~var_1_19~0) .cse0 1)) (< 255 v_z_135) (< 0 (+ (div (+ (- 668) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< v_z_135 0) (< 0 (+ (div (+ (- 412) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)))) (< v_z_131 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_143 Int)) (or (< 255 v_z_143) (< v_z_143 0) (forall ((v_z_148 Int)) (or (< 0 (+ (div (+ (- 412) v_z_148 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 668) v_z_148 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 255 v_z_148) (< (+ v_z_148 v_z_143 v_z_114) 668))))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_131 Int)) (or (< 255 v_z_131) (< v_z_131 0) (forall ((v_z_138 Int)) (or (< 0 (+ (div (+ v_z_138 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_138 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 155 v_z_138) (< (+ v_z_138 v_z_131) 156) (< v_z_138 0))))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_143 Int)) (or (forall ((v_z_147 Int)) (or (< 0 (+ (div (+ v_z_147 v_z_143 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< v_z_147 0) (< 411 (+ v_z_147 v_z_143)) (< (+ v_z_147 v_z_143 v_z_114) 412) (< 0 (+ (div (+ (- 668) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 255 v_z_147))) (< 255 v_z_143) (< v_z_143 0))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_131 Int)) (or (forall ((v_z_138 Int)) (or (< 0 (+ (div (+ (- 412) v_z_138 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 668) v_z_138 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 255 v_z_138) (< (+ v_z_138 v_z_131) 412))) (< 255 v_z_131) (< v_z_131 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_116 Int)) (or (< 255 v_z_116) (forall ((v_z_123 Int)) (or (< 0 (+ (div (+ (- 412) v_z_116 v_z_114 v_z_123) c_~var_1_19~0) .cse0 1)) (< 155 (+ v_z_116 v_z_114 v_z_123)) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_123 (- 156)) c_~var_1_19~0) .cse0 1)) (< v_z_123 0) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_123 100) c_~var_1_19~0) .cse0 1)))) (< v_z_116 0))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_131 Int)) (or (< 255 v_z_131) (forall ((v_z_142 Int)) (or (< (+ v_z_131 v_z_142) 412) (< 0 (+ (div (+ (- 668) v_z_131 v_z_142 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_131 v_z_142 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ v_z_131 v_z_142 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 255 v_z_142))) (< v_z_131 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_143 Int)) (or (< 255 v_z_143) (< v_z_143 0) (forall ((v_z_147 Int)) (or (< 0 (+ (div (+ (- 412) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 411 (+ v_z_147 v_z_143)) (< (+ v_z_147 v_z_143 v_z_114) 412) (< 255 v_z_147) (< v_z_147 156))))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (forall ((v_z_143 Int)) (or (< 255 v_z_143) (< v_z_143 0) (forall ((v_z_147 Int)) (or (< 0 (+ (div (+ v_z_147 v_z_143 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< v_z_147 0) (< 411 (+ v_z_147 v_z_143)) (< (+ v_z_147 v_z_143 v_z_114) 412) (< 255 v_z_147))))) (< v_z_114 0) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_143 Int)) (or (< 255 v_z_143) (< v_z_143 0) (forall ((v_z_147 Int)) (or (< 0 (+ (div (+ v_z_147 v_z_143 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< (+ v_z_147 v_z_143 v_z_114) 668) (< 0 (+ (div (+ (- 668) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 255 v_z_147))))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_116 Int)) (or (< 255 v_z_116) (< v_z_116 0) (forall ((v_z_127 Int)) (or (< 255 v_z_127) (< 411 (+ v_z_116 v_z_114 v_z_127)) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_127 (- 156)) c_~var_1_19~0) .cse0 1)) (< v_z_127 156))))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_116 Int)) (or (< 255 v_z_116) (forall ((v_z_121 Int)) (or (< 255 v_z_121) (< 667 (+ v_z_116 v_z_114 v_z_121)) (< 0 (+ (div (+ (- 412) v_z_116 v_z_114 v_z_121) c_~var_1_19~0) .cse0 1)) (< (+ v_z_116 v_z_121) 412))) (< v_z_116 0))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_131 Int)) (or (forall ((v_z_138 Int)) (or (< 0 (+ (div (+ v_z_138 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_138 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 668) v_z_138 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 255 v_z_138) (< (+ v_z_138 v_z_131) 412))) (< 255 v_z_131) (< v_z_131 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_131 Int)) (or (forall ((v_z_135 Int)) (or (< 411 (+ v_z_135 v_z_131)) (< 255 v_z_135) (< v_z_135 156) (< 0 (+ (div (+ (- 412) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)))) (< 255 v_z_131) (< v_z_131 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_131 Int)) (or (forall ((v_z_138 Int)) (or (< 0 (+ (div (+ v_z_138 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_138 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 668) v_z_138 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 155 v_z_138) (< (+ v_z_138 v_z_131) 156) (< v_z_138 0))) (< 255 v_z_131) (< v_z_131 0))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_116 Int)) (or (< 255 v_z_116) (forall ((v_z_123 Int)) (or (< 0 (+ (div (+ (- 412) v_z_116 v_z_114 v_z_123) c_~var_1_19~0) .cse0 1)) (< 411 (+ v_z_116 v_z_114 v_z_123)) (< v_z_123 156) (< 255 v_z_123) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_123 (- 156)) c_~var_1_19~0) .cse0 1)))) (< v_z_116 0))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_116 Int)) (or (< 255 v_z_116) (forall ((v_z_127 Int)) (or (< v_z_127 0) (< 0 (+ .cse0 (div (+ v_z_116 v_z_114 v_z_127 100) c_~var_1_19~0) 1)) (< 155 (+ v_z_116 v_z_114 v_z_127)))) (< v_z_116 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_143 Int)) (or (< 255 v_z_143) (< v_z_143 0) (forall ((v_z_148 Int)) (or (< 0 (+ (div (+ (- 668) v_z_148 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 255 v_z_148) (< (+ v_z_148 v_z_143 v_z_114) 668))))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_116 Int)) (or (< 255 v_z_116) (< v_z_116 0) (forall ((v_z_121 Int)) (or (< 411 (+ v_z_116 v_z_114 v_z_121)) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_121 (- 156)) c_~var_1_19~0) .cse0 1)) (< v_z_121 0) (< 0 (+ (div (+ (- 412) v_z_116 v_z_114 v_z_121) c_~var_1_19~0) .cse0 1)) (< 155 v_z_121) (< (+ v_z_116 v_z_121) 156))))))) (forall ((v_z_114 Int)) (or (forall ((v_z_116 Int)) (or (< 255 v_z_116) (< v_z_116 0) (forall ((v_z_127 Int)) (or (< v_z_127 0) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_127 (- 156)) c_~var_1_19~0) .cse0 1)) (< 0 (+ .cse0 (div (+ v_z_116 v_z_114 v_z_127 100) c_~var_1_19~0) 1)) (< 155 (+ v_z_116 v_z_114 v_z_127)))))) (< v_z_114 0) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_116 Int)) (or (< 255 v_z_116) (forall ((v_z_127 Int)) (or (< 255 v_z_127) (< 411 (+ v_z_116 v_z_114 v_z_127)) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_127 (- 156)) c_~var_1_19~0) .cse0 1)) (< v_z_127 156) (< 0 (+ .cse0 (div (+ v_z_116 v_z_114 v_z_127 100) c_~var_1_19~0) 1)))) (< v_z_116 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_131 Int)) (or (forall ((v_z_135 Int)) (or (< 255 v_z_135) (< 0 (+ (div (+ (- 668) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< v_z_135 156) (< 0 (+ (div (+ (- 412) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)))) (< 255 v_z_131) (< v_z_131 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_143 Int)) (or (< 255 v_z_143) (< v_z_143 0) (forall ((v_z_147 Int)) (or (< 0 (+ (div (+ v_z_147 v_z_143 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 155 v_z_147) (< v_z_147 0) (< (+ v_z_147 v_z_143 v_z_114) 412) (< 0 (+ (div (+ (- 668) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)))))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_143 Int)) (or (forall ((v_z_147 Int)) (or (< 0 (+ (div (+ v_z_147 v_z_143 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 155 v_z_147) (< v_z_147 0) (< (+ v_z_147 v_z_143 v_z_114) 412))) (< 255 v_z_143) (< v_z_143 0))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_143 Int)) (or (< 255 v_z_143) (< v_z_143 0) (forall ((v_z_147 Int)) (or (< 0 (+ (div (+ v_z_147 v_z_143 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< v_z_147 0) (< (+ v_z_147 v_z_143 v_z_114) 156) (< 155 (+ v_z_147 v_z_143)))))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_131 Int)) (or (< 255 v_z_131) (< v_z_131 0) (forall ((v_z_135 Int)) (or (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 100) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 668) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< v_z_135 0) (< 155 v_z_135) (< 0 (+ (div (+ (- 412) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)))))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_131 Int)) (or (< 255 v_z_131) (forall ((v_z_135 Int)) (or (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 100) c_~var_1_19~0) .cse0 1)) (< 155 (+ v_z_135 v_z_131)) (< v_z_135 0) (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)))) (< v_z_131 0))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_116 Int)) (or (< 255 v_z_116) (forall ((v_z_123 Int)) (or (< 155 (+ v_z_116 v_z_114 v_z_123)) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_123 (- 156)) c_~var_1_19~0) .cse0 1)) (< v_z_123 0) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_123 100) c_~var_1_19~0) .cse0 1)))) (< v_z_116 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_131 Int)) (or (< 255 v_z_131) (forall ((v_z_142 Int)) (or (< (+ v_z_131 v_z_142) 412) (< 0 (+ (div (+ (- 668) v_z_131 v_z_142 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 412) v_z_131 v_z_142 v_z_114) c_~var_1_19~0) .cse0 1)) (< 255 v_z_142))) (< v_z_131 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_143 Int)) (or (forall ((v_z_147 Int)) (or (< 0 (+ (div (+ (- 412) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< (+ v_z_147 v_z_143 v_z_114) 668) (< 0 (+ (div (+ (- 668) v_z_147 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 255 v_z_147))) (< 255 v_z_143) (< v_z_143 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (forall ((v_z_131 Int)) (or (forall ((v_z_135 Int)) (or (< 411 (+ v_z_135 v_z_131)) (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 100) c_~var_1_19~0) .cse0 1)) (< 255 v_z_135) (< v_z_135 156) (< 0 (+ (div (+ (- 412) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)))) (< 255 v_z_131) (< v_z_131 0))) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (forall ((v_z_131 Int)) (or (forall ((v_z_135 Int)) (or (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 100) c_~var_1_19~0) .cse0 1)) (< v_z_135 0) (< 155 v_z_135) (< 0 (+ (div (+ (- 412) v_z_135 v_z_131 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ v_z_135 v_z_131 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)))) (< 255 v_z_131) (< v_z_131 0))) (< v_z_114 0) (< 255 v_z_114))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_143 Int)) (or (forall ((v_z_148 Int)) (or (< 0 (+ (div (+ (- 412) v_z_148 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 155 v_z_148) (< (+ v_z_148 v_z_143 v_z_114) 412) (< v_z_148 0))) (< 255 v_z_143) (< v_z_143 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_116 Int)) (or (< 255 v_z_116) (forall ((v_z_121 Int)) (or (< 411 (+ v_z_116 v_z_114 v_z_121)) (< 0 (+ (div (+ v_z_116 v_z_114 v_z_121 (- 156)) c_~var_1_19~0) .cse0 1)) (< v_z_121 0) (< 155 v_z_121) (< (+ v_z_116 v_z_121) 156))) (< v_z_116 0))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_143 Int)) (or (< 255 v_z_143) (< v_z_143 0) (forall ((v_z_148 Int)) (or (< 0 (+ (div (+ (- 412) v_z_148 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ (- 668) v_z_148 v_z_143 v_z_114) c_~var_1_19~0) .cse0 1)) (< 155 v_z_148) (< (+ v_z_148 v_z_143 v_z_114) 412) (< v_z_148 0))))))) (forall ((v_z_114 Int)) (or (< v_z_114 0) (< 255 v_z_114) (forall ((v_z_131 Int)) (or (< 255 v_z_131) (forall ((v_z_142 Int)) (or (< (+ v_z_131 v_z_142) 156) (< 0 (+ (div (+ (- 412) v_z_131 v_z_142 v_z_114) c_~var_1_19~0) .cse0 1)) (< 0 (+ (div (+ v_z_131 v_z_142 v_z_114 (- 156)) c_~var_1_19~0) .cse0 1)) (< 155 v_z_142) (< v_z_142 0))) (< v_z_131 0))))))) is different from true [2023-11-29 05:43:09,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:09,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602321524] [2023-11-29 05:43:09,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:43:09,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073335983] [2023-11-29 05:43:09,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073335983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:09,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:43:09,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-29 05:43:09,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419651605] [2023-11-29 05:43:09,399 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 05:43:09,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:43:09,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:43:09,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=101, Unknown=1, NotChecked=20, Total=156 [2023-11-29 05:43:09,401 INFO L87 Difference]: Start difference. First operand 1180 states and 1473 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 3 states have call successors, (56), 3 states have call predecessors, (56), 5 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) [2023-11-29 05:43:17,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:43:21,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:43:26,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:43:35,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:43:39,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:43:44,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:43:48,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:43:52,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:43:57,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:01,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:05,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:08,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:09,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:13,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:22,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:26,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:29,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:33,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:35,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:37,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:42,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:46,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:50,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:52,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:44:57,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:01,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:05,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:10,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:14,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:17,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:18,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:24,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:28,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:32,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:36,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:40,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:44,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:48,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:52,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:54,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:45:58,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:46:02,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-29 05:46:06,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]